It was nice that they contacted you to explain the mix-up and offered you the $35 gift certificate on top of thier apology- they didn't have to do anything. They also headed off the mistakenly deposited check BEFORE it was deducted from your account.
Sounds to me like they were on top of the situation before you were even aware of it and before it cost you any money out of pocket. [ From thier standpoint the stop check charge was not necessary so I understand their reluctance to pay.]
It sounds like they did everything in their control to remedy the mix-up.
I agree. This is not an operation where they say, "hey, this one wants to layaway, but this one will buy outright, so I'm going to screw the first person and sell to the second." I have missed my HG bag because it is "on layaway" 3 times now, and I always, as you did, ask to be notified if it does not complete as I would buy it outright. It never has come to me, so I figure 1) My HG is many people's HG, and 2) AFF does not play favorites between buyers and layawayers. So this was just an error on their part where the bag sold before they could get the hold on the system for your layaway. And I'm sure they will send you the check back. There was no need to stop payment on it.
My review of AFF. I have bought 3 things from them so far. 1) LV, better shape than the pictures, very fair price, as I see them go on ebay for more. Was very happy with it. 2) LV luggage, this one I did not like when it came. Was just not what I thought it would be, though I thought it was fairly described. They took it back, credited my account and waived the restocking fee. 3) Cartier ring. Loved it, loved it. Great condition. Always comes in a few days.
They are very nice people, and they are fair. They run a fair business. So I give them a thumbs up without hesitation.
That having been said, mistakes happen. Accept that they do and will and move on. Perfection is a mythological creature and chasing it, especially in the consignment world is not advisable. Even in the boutiques, mistakes happen at retail prices...so be fair and patient and all will be well. Don't presume you are being treated unfairly right off the bat. (I say that bc someone just used HG and you presumed they "knew something" which tells me you seem to be very skittish and suspicious about all net related transactions. Probably for good reason, but be patient and they will get back to you.
Some items have a restocking fee if you return, so make sure you read their terms. This may be why the last poster was "shorted" $100?
Oh, and I eventually got my HG, but am bored with it 2 years later...such is the life of a bagaholic...